Experimental investigation on stir casted hybrid composite AA7068 with SiC and coconut shell fly ash

Abstract

Hybrid aluminium matrix composites through stir casting were made and their mechanical properties are evaluated in this research paper. To strengthen Al7068 hybrid aluminium matrix composites with different SiC weight percentages were created using SiC (0, 2, 4, 6, and 8), coconut shell fly ash (4 wt%) and nano magnesium (2%). Hardness, Impact, ductility and Tensile Strength are just a few of the mechanical properties discussed in this work. Researchers found that adding eight percent SiC reinforcement to aluminium 7068 alloy reinforced with four percent coconut shell fly ash increased the composites' hardness through 32 percent. Adding six percent SiC and four percent coconut shell fly ash to an aluminium alloy 7068 increased its tensile strength by 65 percent. A combination of coconut shell fly ash with Silicon carbide reduced the ductility of the composite material. Aluminium alloy with CSFA and SiC increased the impact energy to 3.2 J. The impact strength increased and decreased in fabricated composites when reinforcement was added to base material.